[GitHub] [rocketmq] areyouok edited a comment on issue #3825: The TCP SO_SNDBUF/SO_RCVBUF is fixed and too small, decrease throughput greatly

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areyouok edited a comment on issue #3825:
URL: https://github.com/apache/rocketmq/issues/3825#issuecomment-1032385516


   Cluster produce/consume test
   
   * 6 producer and 6 consumer in 6 machines, linux kernel 3.x
   * 4 SyncMaster and 4 Slave in 2 machines, linux kernel 4.x
   * each broker has 18 queues for test topic
   * each producer has 400 threads
   * network latency: 1.61ms
   
   although the old version has poor performance in single tcp connection, but there is 6*4 tcp connection for produce and consume. So the produce performance of old version is not too bad, but it's consume qps can't keep up with the produce tps.
   
   version | body size | producer tps | consumer qps
   -- | -- | -- | --
   Old | 250 | 180,000*4 | 130,000*4 
   Old | 4,000 | 72,000*4 | 18,000*4 
   Old | 16,000 | 19,000*4 | 4,600*4   
   Old | 100,000 | 3000*4 | 800*4 
   New | 250 | 175,000*4 | 175,000*4   
   New | 4,000 | 68,000*4 | 68,000*4   
   New | 16,000 | 18,000*4 | 180,000*4   
   New | 100,000 | 2800*4 | 2800*4 
   


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